Using Percentage Worksheets With Answer Key - S1 Topic 15 Page 2
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19Lesson 1:
1. Based on the knowledge of percentages students have acquired in Chinese, the teacher
should present the meanings of the mathematical terms shown at the top of the worksheet,
demonstrating the pronunciation of the terms clearly.
2. Then the teacher should ask the students to read and answer the questions in the worksheet
themselves.
3. The teacher should then discuss the answers with the students.
Lesson 2:
1. The teacher should introduce the pronunciation and meaning of the vocabulary related to
percentage change.
2. Using the vocabulary learnt in the list, the teacher should then ask students to complete the
formula for percentage change.
3. Using the supermarket situation, the teacher should then ask the students to answer the
questions related to changes in price of goods.
Lesson 3:
1. The teacher should introduce the pronunciation and meaning of the key words related to
discount.
2. The teacher should then review the formulae for discount with the students.
3. Using the situation of buying a bicycle, students practise the calculation of discount by
answering the questions in the worksheet.
4. Students pair-up and gain oral practice of the English vocabulary items by asking and
answering questions in English.
Lesson 4:
1. Students practise the calculation of discount by completing the table about buying dresses
in a department store. Students have to calculate the value of the selling price and discount
per cent.
2. The teacher should first introduce the pronunciation and meaning of the key words. The
teacher should also discuss the meanings of profit and loss. Then students then complete
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S1 Topic 15: Percentages
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